BMW 3-Series (E90 E92) Forum - View Single Post - 2009 X5 (E70) 35d: rough idle, half engine sign, and injector codes

BMWerkeUSA · 10-15-2018, 08:26 PM

Hello dman2b,

I actually inspected the intake for CBU when I replaced injector 4. It was not too bad and ISTA+ Intake Port Sooting diagnostics confirms that. As for the swirl flops, I did not look at them. I will when/if I replace injector 2 but again ISTA+ says they are OK. (I reran the test tonight) As for running two tankfuls with hotshots, the car is not derivable at all. It barely idles in the garage for 5 minutes before going into limp mode. Current tank has TECHRON additive. At this rate, it will probably take me a month to run it through.

It seems to me that as the engine gets hot, the situation gets worse.

Thanks

10-15-2018, 08:26 PM	#5
BMWerkeUSA Second Lieutenant 38 Rep 236 Posts Drives: 2007 760li, 2012 650i Join Date: Oct 2018 Location: South Carolina iTrader: (0)	Hello dman2b, I actually inspected the intake for CBU when I replaced injector 4. It was not too bad and ISTA+ Intake Port Sooting diagnostics confirms that. As for the swirl flops, I did not look at them. I will when/if I replace injector 2 but again ISTA+ says they are OK. (I reran the test tonight) As for running two tankfuls with hotshots, the car is not derivable at all. It barely idles in the garage for 5 minutes before going into limp mode. Current tank has TECHRON additive. At this rate, it will probably take me a month to run it through. It seems to me that as the engine gets hot, the situation gets worse. Thanks
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